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Morphological Attributes: Wallmaterial: agglutinated Overall appearance: coiled spirally Coiling: planispiral Chamberform: triangular to trapezoid Aperture Position: basal Aperture Form: slit, no tooth, no neck, no lip Sutures: depressed, --, -- Ornamentation: --, --, --, -- |
type specimen holotype Jurassic Upper Jurassic Arctic Martin Creek Section FEU-1015611 |  |